490 Geography Rivers and Lakes 中国水系 More than 1500 rivers Reserves of 680 million kw hydropower Yellow Rive catchment area of 5464km exterior rivers:64%of the land;of interior: 36% 24,800 natural lakes Man-made canals: Grand canal 1,801 km Yangtze Rive 6300km• Rivers and Lakes Geography Yangtze Rive 6300 km ◼ More than 1500 rivers ◼ Reserves of 680 million kw hydropower ◼ catchment area of exterior rivers: 64% of the land; of interior : 36% ◼ 24,800 natural lakes ◼ Man-made canals: Grand canal 1,801 km Yellow Rive 5464 km